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3 years ago

What is the solution of 3x=-12

Mathematics

2 answers:

faltersainse [42]3 years ago

3 0

Answer:

x = -4

Step-by-step explanation:

divide both sides by 3 to get x = -4

shtirl [24]3 years ago

3 0

Answer:

good luck on the rest of your hmwork :D

Step-by-step explanation:

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WHAT IS X³-27 SIMPLIFIED

Eduardwww [97]

Answer:

It is (x - 3)³ - 9x(3 - x)

Step-by-step explanation:

Express 27 in terms of cubes, 27 = 3³:

$= {x}^{3} - {3}^{3}$

From trinomial expansion:

${(x - y)}^{3} = (x - y)(x - y)(x - y) \\$

open first two brackets to get a quadratic equation:

${(x - y)}^{3} = ( {x}^{2} - 2xy + {y}^{2} )(x - y)$

expand further:

${(x - y)}^{3} = {x}^{3} - y {x}^{2} - 2y {x}^{2} + 2x {y}^{2} + x {y}^{2} - {y}^{3} \\ {(x - y)}^{3} = {x}^{3} - {y}^{3} + 3x {y}^{2} - 3y {x}^{2} \\ {(x - y)}^{3} = {x}^{3} - {y}^{3} + 3xy(y - x) \\ \\ { \boxed{( {x}^{3} - {y}^{3} ) = {(x - y)}^{3} - 3xy(y - x)}}$

take y to be 3, then substitute:

$( {x}^{3} - 3^3) = {(x - 3)}^{3} - 9x(3 - x)$

5 0

3 years ago

Find the solution for the variable. x =

adelina 88 [10]

Step-by-step explanation:

........................

4 0

3 years ago

Use properties of exponents to rewrite the following expressions as a number or an exponential expression with

Lerok [7]

Answer:

[(2)^√3]^√3 = 8

Step-by-step explanation:

Hi there!

Let´s write the expression:

[(2)^√3]^√3

Now, let´s write the square roots as fractional exponents (√3 = 3^1/2):

[(2)^(3^1/2)]^(3^1/2)

Let´s apply the following exponents property: (xᵃ)ᵇ = xᵃᵇ and multiply the exponents:

(2)^(3^1/2 · 3^1/2)

Apply the following property of exponents: xᵃ · xᵇ = xᵃ⁺ᵇ

(2)^(3^(1/2 + 1/2)) =2^3¹ = 2³ = 8

Then the expression can be written as:

[(2)^√3]^√3 = 8

Have a nice day!

7 0

3 years ago

Find the volume of the cylinder Type an exact answer in terms of pi

ZanzabumX [31]

Answer:

648pi

Step-by-step explanation:

V=pi*r^2*h

V=pi*9^2*8

V=pi*81*8

V=648pi

7 0

3 years ago

100 Points Which angle is the angle of incident?

PilotLPTM [1.2K]

Answer:

angle c

Step-by-step explanation:

angle c is the angle of incidence. It is the angle between the perpendicular ( line that meets the surface at 90 degrees) and the ray that is coming in

8 0

3 years ago

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